Guru Nanak Dev
People are of the belief that, at the time of birth of Guru Nanak, an astrologer was called upon to prepare his horoscope. The astrologer insisted on meeting him and worshipped Guru Nanak with folded hands. At a young age of five, Nanak began discussing on spiritual subjects. When he was seven years old, his father got him enrolled in the nearby school village for pursuing studies. However, very soon, he left the school and started taking private classes.
At the age of thirty, he was found to be missing and people though that, he has drowned in the stream, where he used to go everyday for taking bath. He came back after three days and started saying that There is no Hindu, there is no Muslim. Since then, he started teaching people and this laid the foundation for the beginning of Sikhism.